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Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubu

To: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Sun, 13 Sep 2009 14:31:23 +0300
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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On Sun, Sep 13, 2009 at 04:23:35AM -0700, Boris Derzhavets wrote:
> title Xen Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
>     kernel  /xen-3.4.gz dom0_mem=1024M loglvl=all guest_loglvl=all 
> com1=9600,8n1 console=com1
>     module  /vmlinuz-2.6.31-rc8   ro root=/dev/sdc2 console=hvc0  
> earlyprintk=xen
>     module  /initrd-2.6.31-rc8.img
>

kernel /vmlinuz-2.6.31-rc8 ro root=/dev/sdc2 console=ttyS0,9600

That should definitely work for baremetal kernel. Does your kernel have
serial support built-in? 

Are you sure your serial port settings on the other computer are ok? 
Try using "minicom" and playing with the different flow control
settings.. (no flow control / hardware flowcontrol / xon,xoff)

-- Pasi

> 
> --- On Sun, 9/13/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> 
> From: Pasi Kärkkäinen <pasik@xxxxxx>
> Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of 
> Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
> To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Konrad 
> Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
> Date: Sunday, September 13, 2009, 6:41 AM
> 
> On Sun, Sep 13, 2009 at 03:33:40AM -0700, Boris Derzhavets wrote:
> > > No need to setup serial console, unless the kernel crashes..
> > Vanilla 2.6.31-rc8 crashes.
> 
> OK.
> 
> > >If it crashes, try to use only "console=ttyS0,blah", ie. drop 
> > >"console=tty0"
> > Dropped, still no luck.
> > 
> 
> Hmm.. that's weird. 
> 
> Can you paste again the grub entry for Xen with serial console? 
> 
> -- Pasi
> 
> > Xen Serrial Grub entry works fine.
> > 
> > Boris.
> > 
> 
> 
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> 
>       

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